Elevator



ml* .man

Uro/mins J. DARBY ELEVATOR original Filed oct. 5 192e 2 sheets-sheen 1 VII. nl lltlsllllwrrllll April 24, 192s.

April 24, 192s.

J. DARBY ELBVATOR Original Filed Oct. 5 1926 2 Sheets-Sheet 2 N VEN TOR TTU/NVE J Patented Apr. 24, 1,928.

- UNiraD {S'TA'TES PATENT olf-Fica.

aoHN ,Damm or sUist1111r1c'1, NEW JERSEY, ASSIGNOR, EY MEsNE ASSIGNMENTS, 'ro

SHUR LOC EJLEVA'IOIELV SAFETY CORPORATION, NEWARK,

PORATION OF NEW NEW JERSEY, A conv ELEvA'roB.

Application med october 5, 192s, serieuY No. 139,603. Renewed september so, 1927',

ln an application of Thomas L. Harrison, Serial- No. 98,995, filed April 1, 1926, assigned to the Sh'ur Loc Elevator Safety Company, the assignee herein, there'. are sho wn. described, f and claimed'y yinterlocking safety devices by which movement ofthel elevator car` is prevented When theY shaftdoor is open or'its effective movementJ has been begun, vthe construction being such that effective opening movement ofthe shaft door can be commenced only when thepcar is at the corresponding floor, the door beingk at all other times (except k1 emergency) .lockedl against effective openingnovement, and that the locking of the controller is effected by the movement ofthe shaft door Without involving any pressure or reaction in the movement ofthe controller handle. In that construction it is door may have the car be at carried by' it may preliminaryv movement of a part moving with the door in order vthat such part may be released so as to have and tol permit the door to have full opening movement. ','The mechanism in which the present invention is embodied, as to its principal feature, has the same characteristicof operation as that just described, but in a. somewhat different mechanical expression.

full opening movement, that a Hoor in order that a part to the accompanying drawings in whichit is illustrated and in which:

Figure lv isa view, as seen showing a: portion of a shaft door, a portion of an elevator car With its cont-roller connections. and the improvedinterlocking devices, the shaft door and associated parts being shown in the `positions which they assume when the door is closed.

Figure Q is a view of the same inelevation,

as seen from the right handv in Figure '1,

vation on the plane indicated bythe broken line 4-fi of Figure'l, but on a larger scale.

I Figure 5 is a detail viewl in-` sectional ele-l necessary, in order that they offer resistance to the:

It will be more y fully explained hereinafter'with referencevwith lug b1 movement of the lever.,

from above,

vation of the emergency releasing device,

the plane of section being indicated by the broken line 5-5 ofFigure 4.

Figure Gis a detail view in section on the plane indicatedby the ,brokenA line k6 6 of Figure 3.'

The interlocking devices are shown'in op'- lever stands in the position shown by full `lines in Figure 3, and as the effective opening movement of the doorbegins the lever c isswung from thefull line position kto the successivev positions indicatedL by 'v broken 'l0 l'rollerbearing stud a2 carried by the door a.. r Infthe closed position of the door the forked lines, the stud,-in the continued movement' of the door, passing over and beyond 'l the *right-hand member of the forked lever.

The latter remains in this position until, in

the last of the closing movement of the door,

the stud a2 strikes the left-hand member of theforked lever and restores the lever to its initial position. Lugs 0 1 on the lever coact on theobracket b to limit the Connected'with the lever c, as at c2, is a connecting rod d which, at its otherend, is f operatively connected, as through a'bell crank lever d1, with a slide e mounted in a guide e1. The slide e, mounted on the door sill or' floor, carries a'dog f,

which is held. normally by a light spring f1 or by its'own Weight, in position to engage 1 'a fixedfshoulder e2 one'the guide housing 611, the dog f, when in engagement ywith such shoulder, preventing the. full'sliding move- `ment ofthe slide e' and therefore the effective opening movement of the door, which is connectedv with the slide,fas already described. vAlso mounted inthe slide e isfa two-part plunger g, g1, thetwo parts having?.V

a relatively stiff springg2 interposed betvv'eentheml and the part g1 havingV an ladjustabletoe ga'for cooperation with the tail 2 of Vthe dogf. It will be obvious-that the doorv will be locked against effective opening movement until the -pl'unger g, gl is through the'rst inch, to the relative movement of the two-part plunger with respect.V t0 the slide, against the pressure of the" light spring fla, to ell'ect the,disengagement of the dog f'so asv to permit a full opening movement ofthe slide andof the door. ,It will be understood that `the plunger is formed in two parts with an, interposed spring to permit movement otjtlie slide under, aconditioner-'to be explainedh L The controller e' which is constructed as usual, except as hereinafterexplained, co-

acts in substantially the usual manner withw the locking rod 1t. The latte-ir is carried by.

a suitable counter-balancediarm fm which is fixedfofn a sha'litrnl, supportedfin a bz'ifacket m2, and carries yan arm m. The latter .is connected by 4a lilik Z withv onel arm 'o't a bel-l crank lever Z", the othel arm 'of whichlis iii.

operative engagement with a slidii'ig block o, supported vfor sliding movement on the,

i forked le car by suitable guides oil. ll/Iountedion the blockfo, so as to be capable of limited sliding .movement with respect thereto, a shoe 71,.,

suitably formed vfor coaction with the plunger g, g Vabove,ii'ientioned, in the ver'- l tical` movements olf tlidelevator car. As

shown, the shoe is carried by rods p1 mov-` ably mounted in brackets ogen the block 0,#

light springs ptbeingi provided to hold the shoe p-normally in extended plositfioin-lbut toperinit it to yyieldfto the pressiii'eolthe plungerggl. i Mounted on the block oiis a dog g which is held normallyby its own Weight out of ene-,r4

gagement with a lock-ing shouldero on 'the fixed support o4t by which the block 0 is ,supported through-the guide rollers-1.' The shoe p carries a pin pfwhich is adapted tov coact With the tail g1 of the-dog Q to move the dog into locking engagement With the shoulder o3. This takes 'place' Whenthe block 0 is in itsy extreme forward position,v towhich it is moved normally by the counter Weight on the arm ma and when, the block being iii suchforward position, the shoe p is caused to move in the opposite direction, relatively to the block ,0, by the preliminary movement of the plunger g, g1 With the slide e, suchjrela-` tive movement of the shoe p causing-the dogl g to engage Athe locking shoulder o so that the block fo-is held from movement andthe i shoe p, having reached the limit ot its movel ment relative to the block o', is'also held 'from :further ,niovement, whereby 'the Aresistance is offered to, the' movement of thejplunger y, gil With the slide e, which causes that movement of the plunger "q, gpl, relative to the slide e in which it is carried,which is necessary. to .dis-,-

slide c therefore `to -tionto release thestud a? vand withflhe locking.

engage the dog f from the stop e2 and permitrtheslide `e to have the ullfe'ffective movement necessary to full openingK4 of the door, At this time the part g of the twopart plunger is in contact with the sheep, Which is itself at this time held from movement. Underjfthis condition the' spring g2 permits the part ig of rthe plunger 'to move withr respect to the part g thereof. and the p I l have .its ull effective movement and the lever c to swing to a posipermit the door to have its tiill opening movement.

The controller having been moved tothe nenti; l position ltiybriiigy the car lo rest rod a, under the iniiniienceot Ithe counter-Weightedarm m3 above mentioned and,th e iiiits extreme forward position, in which it fisheld byhtlie'fcoaction ot' the shoe p, pin p, dog gend shoulder 03, the lo.ck ii igrodwill be held inthe notchV rf andV therefore bev prevented yfrom startithe car in either-direction so long thedoor isopen beyond its Yinitialzniovement,

'Iii

-tliefllooif7 the notch le thereof is entered bv." the roller nil-en the locking block o being then 7` the controller `will movement to` v inyivhicl'i itslioller u? has vlett the jaws off-'the i' jrl c; Vhein-however, the door is moved to i s' fullyclosed position andl the forked lever, has been swung to fthe, position shown by full lines-in Figure 3*,the slide@ :is Withdrawn,with the plunger g5 .Kr/1. is Withdrawn .fromcon tact with `the shoe; lo., fihen the Asheep relieved. ot v`the pressure et "the plunger-lg, g", it is movedjvby thesprings p? relative Vto, theblocl o and the dogr fore peiinitted to drop out zot' engagement shoulder 0". The Vblock'o is therefore released and the locking 'rod is `nolonger held positively in engagement in the -notcli'v ol' thefcontroller The controlico,

g is the'ielei: can tl'iei'efore be moved and by reason ot th'e-caini'ned. rounded toijimitioii of the notch. if", ytheirod isfoi'ced downward by the rmovement of the controller' against Vtheaction-ofthe coi'inter-weighted arm m3. f

It willibe noted that the controller c', iiiii o steadrof-ibeiiig', truly circular, is ca mmed off A in both .iiliifections from the notch il, so that the tendencyffofthe pressure of the roller nl of the lockingrodiz., underI the influence of the counter-Weighted ailfiii'fiiiis :to-cause the controller tofbe returned to its neutral posi'- tiofn, rather'jtlian'to *prevent7 asV with a. braking action-,the automatic returii. ofthe controller to neutral position, as would otherwise lbe the case it the-controller Awere truly.;

circiilar.` i Y It may happen may be desirable topermitthe door a. to be opened from the side of, thea door remote from the car.` `when theicar is not at the floor.V

To accomplish this, provisionVV made ,for disendao'inff the ,dow from theelockine` 2D b C D b shoulder frointhe hall side or remote side that ina contingency itY va rod r4, on which yis carried alug v in details of ot the door. As shown in Figure v5, there is arranged ink cooperative relation with the dog f carriedk by theslide 6 Y which is held normally in inoperative position by a springrl.'v Thecam slide is connected by a rod r2 anda. flexible Vjoint r3 wilth 7', esigned, when lifted to be engaged by the left hand( lug c1 of lever c. AnV aperture l[15in door a provides an opening for the insertion of any suitable instrument with which to lift the rod 714` and bring lug r into position to be engaged by lug c1 when the lever c is rotated by i the opening door movement. Movement of' the rod r* to the left, causes cam arto lift latch f out ot engagement vwith the fixed stop c2, thus permitting the full forward movementV of slide c.

It will be understood that various changes construction and arrangement can be made and that, except as indicated in the accompanying claims, the invention is not restricted to the particular const-ruction shown and described herein..v

I claim as'my invention:

l. In an elevator, the combination of a controller formed with a locking notch, a locking rod for coactioii therewith, `and means acting normally to press the rod toward the controller and into engagement with the notch of' the controller, the notch being cammed to force the rod outof the notch when the controller is turned and the rod is susceptible of movement.

2. In an elevator, the combination of a notched disk-like controller, a' locking rod for coact'ioii therewith, and means acting normally to press the rod toward the controller, the controller being cammed'inwardly toward the notch, whereby the pressure of the rod tends to turn the controller' to notch engaging position.`

3. In an elevator, the vcombination of a.

car, a movableushaft door, a` locking device on the car side ofl the door .to` prevent full opening movement of the door, means the operation ot which is controlled by the position of the cai' to disengage said locking device. and other meansl operable fromthe.

other side of the door to disengage said locking device.

4. In an elevator, the combination of a car, a movable door, ya slide movable with the door, a locking device to prevent movement of the slide and of the door, mea-ns the operation of which is controlled by the position of the car to disengage said lockingdevice.y

and other means operable from the other side f of the door vto disengage said locking device.

5. In an elevator,the combination of a car, a movable door, a slidemovable with thedooi', a locking device to prevent movement of the slide and of the door, means the operation of which is controlled by the positionof the car to disengage said locking device, and

"other means operable from the a cam slide. 'i'.

kengage the locking device,

ative` relation with lgage the dog from the stop block operatively yof the,

Vmove it to locking position.

other side of the door todisengage said locking device, suchmeans comprising a cam slide to disand means to operate the camslide.

6. In an elevator, car, a movable door,

the combination of a a stop to preventmovement carried by theslide mally engaging of the slide, a plunger and arranged disengage the same from the stop, and means carried by the car for coaction with the plunger' to disengage the dog and permit full effective movement of the slide and the door.

7. In an elevator, the combination of a car, a movable .-door, a. forked lever in operthe door and movable therewith in tlie initial opening movement ofthe door, a slide operatively connected with the forked lever, a dog carried by the slide and adapted to engage a stop to prevent movement of the slide, a plunger car# ried by the slide, and means carried by the car for coaction with the plunger to disenand'permit full effective movement of the slide and of the door. i

8. In anv elevator, the combination of a car, a movable door, a controller on tliecar, a locking rod, means to press the locking rod normally toward the controller. a sliding connected withthe locking rod and movable therewith, a dog carried by the block and adapted to engage a stop to prevent movement of' the block and of the locking rod, but normally disengaged therefrom, and means actuated by the opening movement of the door to actuate the dog to engage the stop and prevent movement of theiblock and of the locking rod.

9. In an elevator, thej combination of a car, a movable door, a lockingrod, mea-ns to press the locking rod normally toward the controller, a sliding block operatively connected with the lockin lrodand movable therewith, a dog carried by the block and adapted to engage a lstop to prevent movement of the block and locking rod, but

ing vmovement of the door to actuate the dog to engage the stop and prevent movement of the block and of the ylocking rod, such means including a shoe mounted movably on they block for'coacti'on with the dog to 10. In an elevator, the combination Vof a car, a movable door, a notched controller onV the car, a locking rod, means to'press the locking i'od into the notch ofsaid controller,

a sliding block operativelyv connected with the locking dog carried by the blockand adapted engage a stop when the locking rod is in to the a slide movable with A the door, a dog carried by the slide and nora controller on the car,

normally disengaged therefrom, and means actuated by the openrod and-movable therewith, a'

forlcoaction with the dog to sol iool

iis i notch of said controller ment of the block and and means actuated by ment oi the door to actuate the dogl toen- ;rage the stop and prevent movement oi the block and of the locking rod, such means in- @hiding` a shoe mounted n'lovably onthe block for coaction with the dog' tov move it to locking position.

In an elevator,

and prevent moveof the looking` rod,

the opening movethe combination 'of a cal', a notched Controller on the ear, a locking "rod to engagey said controller notch, means carried by the ear to'operate the locking, i'odfa movable` door, a slide movable with the dooiIV toengage said Ylast vnamed means to hold the locking rod against movement and loek'fthe controller Yin the opening movement of VVsaid door. This specification signed this lst day of October, A. D. 1926.

JOHN DARBY.l 

